Centrifugal governor.



F. W. BENTLEY.

GENTRIFUGAL GOVERNOR.

AHLIGATION FILED JULY2o,19o7.

Pabtented May 17, i916.

/nVen/of: Fred Z5 775/@ l/l//rresseax n sel-Serew l l hulI (loes uol inleiliore with ils longil'udinnl i UNQTED STATE FRED XV. BENTLEY, OF SCHENECTABY, NEVJ YORK, ASSIGNOR T vGElll'EISLiflL ELECTRIC COMPANY, A CORPORATON OF NEW' YRK.

CENTRIFUGAL GGVERQE.

Application :filed Kul-r .'29, .190?.-

To all whom il muy @omni/,mf

lio il known limi l, i"inzo ll. liir'rizin', :i (filizfn of lhe Unileil frlulefi, residing; ul, Selnnw-imly, count) oli f'lieueelnlly, ulo ol New-York huye inwulefl ooi-hun new mul useful luu n'meinen iu Centrifugal (iov-j ei'nors, ol which the following' is si Specificalion.

This invention l'elnles lo uuloinnlio governom` of lhe conl'ril'ugul lype such :is are i used Vl'or governing enginos acl'unlod hy ulezun or ollufr elnslie fluid.

'Vl'lie invenlioii is nn iiuproviinenl upon llu governor shown in ll. f4. Tilleul Ho. "(78,319, lwfeniher BT., 1904, :incl ils object is l lo .improve the eonslrlufl'ion uml .render it more ooiupuel :Nul eliieienl lhz'in lufi'f'oiore. 'l`he l'eulul'm ol' novelty nro liereiuuller nel 'orlh :unl pru'luful'urh poiuleil oui in lhe claimsz ln lhu neeoinpunylug drawing, Figure l is u w-i'lieul `noelionnl elevnlion of one enii lioiliunfnl o'lE my invenlion; Fig. 2 is n Suclionul plain View on llie line 2 2, Fig. l; Vig. l i5 :1 seelionul olevzilion ol'` lhe lower portion of lhe spring unil ils abulnieul,` lzilien on the linel 3MB, Fig. und Fig, fl isn verlicul section ol lhe universal joint, i lzllien :it righi', Fig'. 3.

rlhe working pin-lhy are enrrieil by u suil-- :llile l'runie, preferably nu inelosing)r easing or pol l. which is prelerulil)v cylindrical, :unl hns zi conlrzll huh i), ou ilr; hol'toni by inennsl ol' which il is Secured lo lho upper eiul of i the yulmll Il, preferably by n key -l loeliocl hy The axis ol lhe pot, is coini-iilrfnl with llnil oll lho shnli'lso llnil il ron lilies eoneeulrienlly lhl-renilh.` A lid l1 is ,l'uuleueil on lhe pol hy uei'ews TZ :nul conA i lnius u oenlrzil ol'iening prolernhly surrounili e l hy un upi'ilghl f'iieulnr flange Q on which resls :u1 nnuulur philo S) prel'el'nhly rulihelell inlo lhe opi'euingf, mul seeurell by one or more 1 serows l0. rl`he serew-lliren lull Sleui ll ol (he upper \1pr'ii1g -plu gr puSses freely lhrough a lhe eeulrnl nprrluri in lhe pluie rurl is supporlefl :illjuslnhly hy lhe nul 12 n'hieh reeds i on Suid plnle. lie'v 'lf' l'uleuell lo llie plule und engages :i longiiullinnl groove in i ll'io sioni lo enuso il lo i'olule with lhe pol,

:ingles lo the Showing, in

mljusliinonl. f

The lower Spring-plug 1.4- is suspended at lh@ lower end of the eonnooliim-rod 15, by l l uzezuiz-ls olL which l lu olli-fri' nirha vi'luiil lo he a ,p iuieluunsnz for ioiznple nel lli@ governor fi unil foil ruoliou is Connuunicnlml wn lending lo ifsivos or upply of ii'iolive governo@ Such levers il um! .alicia-vn in the ubovomeniionml pnl'onl'. ,l ui.' 'sal joint is luier-- posed helm-en wifi roll und tho plug` in ordm' lo nll'oril lhe loller poi'lfuel lreolloiu lo ac*- roinuuululo iisell' lo my vn iiiiions in the eoni lruvliou .fu ulion o'll llio 'pringt l prol'ei' lo Cou:lruel ihis joint :1S: l

The lower end of lhe rod is provided with o l'orl 1G which iS prelieifihljr iunclesoimrilo from the rod :nul is liliillell mill lapped to receive the llui-z'uloll @nil of the rod.

ii'ilh :i rol'aining nul l? on ils lower oud. llsippei oinl is noxiiloil willi u forli 18 nrrniigfeil :il right img-los lo lh@ fork 1G. Between the urnis of lh@ two forks is u block il). livol pins 20, Q1 pass transversely through tho forks muil llie block :it right ongles lo @zich olhor though not in the suine )linnn ColNr-pins QQ retain the pivot pins 11i place: or if one pin 'has il notch 'lo engage with the other pin, the cotlier-pinsfare nocessuiy oul)v in sind latter pin.

The spring-plugs are screw-threaded so fluit they emi lio i'ozu'lily ullnohed lo lhe ends of lho helio-nl tension Spring Q3, which oncirelos lhe rod 15, 'l'ho rogulnlion is ailjuslell by screwing lh@ upper pluT into or out of tho spring, so as lo Yury lhe number ol' el'leelivo turns.

Vlhe governor ueiglili' Q4 nro two in numbo' znul are provided with huile-edge pivols S which heur ziggjuinsl l'ulrfruui pluies 2G Seeurel'llo lille under sido ol' l'he lid l5, ad-

jueonl lo ils eenlrnl o1 suing. i'll llieir up:

` per owls, on mieli sido, lhoy have fi hook if? hloeli ol hurllouell sloel, grom'iufl lo receive l'he lqrii'lfoeflge uit tho upper 'end ofthe Sliul. il plnle 2S) is 'l'nsleiiell lo the Sill@ of llio hook null overlnps l'ho ond of the Slrul' lo rolnin il in pluoo. The lower knife, odge of the s'lrut is sleppel'l in zi groove in a. iieel., i block l5() which 1S fastened hy n Screw 3l upon a lug;r B2 excndmg laterally from the lower s plixigplug. Each block receives bolli the noon in Figs.

struts on that side of the spring, and theyv -of' the spring lifts the hooks 27 and rocks the weights inward until their inner faces abutvagainst the opposite sides of the blocks 30. When running, the weights swing outward until, at maximum speed, the studs 3ft strike the Walls of the pot. These two positions measure the vertical range of movement of the rod 15, which in actual practice is about five-eighths of an inch. At normal speed the weights stand about in the position shown in Fig. l.

Means are provided to counteract `any tendency of the spring to move out of its central position in the plane of rotation of the weights under the stress of centrifugal force due to its own weightand that of the parts carried on its lower end. I prefer for this purpose braces placed between the lower spring-plug and the walls of the pot. These braces are arranged radially, on a diameter at right angles to one passing between the two struts on each side of the spring-plug;

e., in the same axial plane as that in which the weights swing, as shown in Fig. 2. lhe braces consist preferably of stout rods 35 having rounded ends which are received loosely in sockets 3G formed or inserted in the sides of the spring-plug and the walls of the pot; said sockets being of suliicient depth and diameter to permit the necessary vertical play of the parts without danger of disengaging the braces.

By locating the weights in the saine zone of revolution as the spring, I get a. structure which is very compact, being only half as high as a governor in which the weights are placed below the spring. The parts are all inclosod in the pot so that if anything breaks it cannot ily out and endanger the attendantsor adjoining apparatus. The parts can be made suiiiciently large to be strong and durable, without occupying an undue amount of space.

An important feature of the device is the omission ofrubbing surfaces of any kind, thereby eliminating all lag in the operation of the governor,and insuring a prompt and delicate response to changes in speed.

In accordance with the provisions of the patent'statutes, II have described the principle of operation of my invention, together with the apparatus which Inow consider to represent the best embodiment thereof; but I desire to have it understood that the apparatus shown is only illustrativa-and that the invention can be carried out by other means.

that I claim as new and desire to secure by Letters Patent of the United States, is,-

l. A centrifugal governor which rotates about a given axis, comprising a frame, an axially arranged spring member that, is attached at one end to the frame, means extending between the frame and the unattaehed end of said member for preventing its lateral displacement, weights pivotally mounted on the frame and located in the same zone of revolution as said spring inember, and means connecting the weights and said member.

i2. A centrifugal governor which rotates about a given axis, comprising a rotatable shaft, a cylindrical casing fixed to the shaft, a tension spring located along said axis that is attached at one end to said casing, means for preventing the lateral displacement of the unattached end o'f the'spring, weights arranged within the casing and pivotally mounted thereon at each side of the spring in the same zone of revolution as said spring, and means connecting the weights and the spring.

23. centrifugal governor comprising a rotatable shaft, a casing fixed to the shalt, a tension spi-mg having its upper end secured to the casing, a spring-plug to which the lower end of the spring is attached, weights pivotally mounted on the casing and located in the zone of revolution of said spring, and connections between the weights and the plue'.

il. A centrifugal governor, comprising a tension spring, a spring-plug to which its lower end is attached` pivoted weights located in the zone of revolution of said spring, and struts between said weights and plug.

5. A centrifugal governor, comprising a' tension spring', a spring-plug attached to its lower end and having late'ral lugs, pivoted weights located in the :cone of revolution of said springand having hooks, and struts between said hooks and lugs.

(i. A centrifugal governor, comprising a tension spring, a si'iring-plug attached to its lower end and having lateral lugs, grooved blocks on said lugs, pivoted weights located in the zone of revolution of said spring and having hooks at their upper ends, and struts having knife-edge ends bearing against said hooks and blocks. y

7. A centrifugal governor, comprising a tension spring, a spring-plug attached to its lower end, and having lateral lugs, grooved blocks on said. lugs, pivoted Weights located in the Zone of revolution of said spring and having hooks at their upper ends, struts having knife-edge en ds bearing against said' hooks and blocks, and retaining plates for preventing said struts from being thrown out of place by centrifugal force.

8. A. centrifugal governor, comprising a amaai airtime, tension spring, nieans for supportw ing` the Spring at one end on said traine. a ping attael ed to the other end ot the Spring, pivoted wen its located in the zone of revolation of the spring` and actingr on the plugr in opposition to said spring, and lmeans tor prerentiiigl lateral diaplacen'ient ot the plug and the attached end of the sin-ing.'

9. fi. centrtngal governor, coinpriaing a tension spring., oringplng attached there to, piroted not:J its located in the zone of rerolntion of Said Spring and exerting a prenante on said ping in opposition to Said spring, a raine. carrying the parts, and braces between said plug,- and frame.

10., A centrifugal governor comprising a tension Spring, a spriiiig-plug attached. there to, pirated weights located in the Zone of Said Spring and exerting;` a.

revolution or pressure f id pine; opposition to said spring, a, 2 carrying the pz braces between in nd traine 'consisting o' rods, and sin ely receiving the ends of the saine.

)ai governor, comprising,v a

ring-plug attached, thereto, pivote-d wein located in the zone of revolution o said spring and exerting a pressure on raid pl in opposition to Said spring, a ino c rryi the parts, and braces hetaeen said plup4 and traine in tho Saaie axial plane as that in which the weights sivirnfi ft2. il ce it" ahoat a eliatt, a tt p l'ran'ie nnen a tension p ng la. 'ingr its axis coincident 'with the aan; ol' rotation, weight4 piroted on the l'ranae or casineY adjacent one end ol' the spring: and arranged on opposite .aides ot' the apringf in the saine :lione ot' revolution as aaid op ingr, and connections hetn'een thc weight.k and thel other end ot the spring. lIl. la cenlrit'ueal governor, comprising a .s ring'n neiy-,rha located on opposite eide ot' Qing. ltnit edge pivots tor the weights arranged adjao .t one end ol the prine', at i ions intermediate the 'weights al `governor which rotates compris-ang a rotatable on thc Iahatt,

l' c and the the yaprilie respta-tivcly. litcentrifugal jorernor which rotateaI ahou-t a coniprirnng an axially located sprintf, weighta4 arranged on opposito aides ot' the spring and substantially parallel thereto; oppositely dinjosod knifeedge pivots at one end of each weight and adjacentI one end ot1 the spring, connections intermediate certain ot' the pivots and the other end ot' the sprinfv; there being knifeedge pivots between Said conn'ectiona and the spring, a rod leading troni the 'i5- tiringl to the apparatus to'he governed, and a uni rersal joint hetween the lQpring;` and the rod.

l5. ln a centrifugal governor, the coiuhination ot a rotatable shaft, a f.:ylindrical casing having a head at cach end thereof, one of said head being mounted on the end et the shaft, an axially a rrangged coil spring' within the casiingr that is Secured at one end to the other head of the cylinder, a plug attached to the other end of the spring,

weights piroted to the lantancntioned head and arrangged around tho ontsideof the epi-ing, connections hetn'een the weights and Said pluie*` a rod axially arrai l within the Spring and extending outwardly through that head to which one end ot" the spring is attached, and a ctainetftion hetn'een the inner end ot the rod. and said plug.

it. ln a centrifugal governor, the conihiu nation of a rotatahlc shaft, a cylindrical casing having a head at cach end thereot', one ot' said heads being mounted on the end of thc shaft, an axiallf,r arranged helical spring within the fasing that in adjustahly Secured at one end to the other head of the. cylinder, rights arranged on opposite nidos of 'the Spring and pirnted to said head, a plug` atta'hed to the other end ol the spring, connectionzw' hctwecn the weigrntal and the plug`r braces arranged hetwcen '.y' plaga4 and the wall of the casing` to prevent lateral displacement ot said plug, a rod axially arranged within the spring and extending out- .\'ardl'}v through that head of the cylinder to which one end ot the sprintf is attached, and a pivotal connection between the inner end ot' the rod and said plug.

ln Witness \\'hereot`, l have,hereunto I e.t my hand this ltlth dal,7 ot lutin WOT.

lVit'nerses:

llnnaanin ll. linnn, Hman: (Pieroni). 

